Bananas: Serotonin Superfood?

If a diet inadequate in vitamin B6 is contributing to low levels of serotonin, dietary changes may help—but that doesn’t mean eating one banana a day will be enough to improve your mood.

• Adults (ages 19–50), the RDA of vitamin B6 is 1.3 mg. A single medium banana has 0.4 mg (about 20% of the RDA).
• According to the USDA, one medium banana has around 3.1 grams of fiber, or 12% of the recommended daily value.

Bananas are a source of potassium, supporting cells in nerves, the heart and other muscles. Having too little potassium in your diet can contribute to health problems, e.g. hypertension.